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As a process that enables the high-speed and continuous forming of lengthy materials with a constant cross-sectional configuration, roll forming offers much higher productivity than the stamping process. However, in case a change must be made to the shape of the cross section, the material must normally be stamped or joined with a part containing a separate shape. This affects productivity, increases the number of pieces, and degrades the material's appearance. This report describes the roll-forming technology that we developed, in which the cross section of the material can be changed gradually. This method adopts a system which uses a movable and rotatable roll-stand that enables high-speed, continuous roll-forming processes.

In general, the surface treatment has been carried out to date by large lot production (batch treatment); such a production system results in several disadvantages such as large scale equipment, large required space, long lead time and high fluctuation of the product quality. In the present paper, a technology which can be carried out for small lot production has been investigated to solve the above disadvantages. The technical point of small lot production essentially lies in the development of a high speed treatment technology; if small lot production is performed without success in high speed technology, no advantage can be given; only a larger space becomes necessary for the equipment. Here, in the present paper, investigation of a high speed process for each step of electroless nickel plating will be described.